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LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES (Details 18) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Troubled Debt Restructurings disclosures    
Carrying Amount of Foreclosed Properties $ 6,736rbcaa_FinancingReceivableModificationsCarryingValueOfForeclosedProperties $ 11,243rbcaa_FinancingReceivableModificationsCarryingValueOfForeclosedProperties
Residential Real Estate - Owner Occupied    
Troubled Debt Restructurings disclosures    
Carrying Amount of Foreclosed Properties 1,634rbcaa_FinancingReceivableModificationsCarryingValueOfForeclosedProperties
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= rbcaa_OwnerOccupiedResidentialRealEstateLoansMember		 3,209rbcaa_FinancingReceivableModificationsCarryingValueOfForeclosedProperties
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= rbcaa_OwnerOccupiedResidentialRealEstateLoansMember
Commercial real estate    
Troubled Debt Restructurings disclosures    
Carrying Amount of Foreclosed Properties 1,908rbcaa_FinancingReceivableModificationsCarryingValueOfForeclosedProperties
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateOtherReceivableMember		 3,324rbcaa_FinancingReceivableModificationsCarryingValueOfForeclosedProperties
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateOtherReceivableMember
Construction & land development    
Troubled Debt Restructurings disclosures    
Carrying Amount of Foreclosed Properties $ 3,194rbcaa_FinancingReceivableModificationsCarryingValueOfForeclosedProperties
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember		 $ 4,710rbcaa_FinancingReceivableModificationsCarryingValueOfForeclosedProperties
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember